Question

我编写了一个api，它使用spring-boot和hibernate从本地托管的数据库中读取数据，目前它只使用内置的会话工厂。计划是使用HSQL将此数据库移动到内存中我使用spring xml表示法实现了这一点：

<jdbc:embedded-database id="dataSource" type="HSQL">
    <jdbc:script location="classpath:import.sql" />
</jdbc:embedded-database>

使用配置bean如下：

@Configuration
public class hsqlConfig {
    @Bean
    public DataSource dataSource() {
        return new EmbeddedDatabaseBuilder()
              .setType(EmbeddedDatabaseType.HSQL)
              .addScript("classpath:import.sql")
              .build();
     }
}

系统的第一个查询工作正常 - AS下面：

public List<SectionAnswerBean> getSectionAnswer(List<Integer> answerIds, List<Integer> sectionIds)  {
    //SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
    Session session = sessionFactory.openSession();

    String hql = "SELECT A.id AS answerId, A.sectionId AS sectionId, A.questionId AS questionId " +
           "FROM Answer A " +
           "WHERE id IN (:answers) " +
           "AND A.sectionId IN (:sections)";
    Query q = session.createQuery(hql)
            .setResultTransformer(Transformers.aliasToBean(SectionAnswerBean.class));
    q.setParameterList("answers", answerIds);
    q.setParameterList("sections", sectionIds);
    List<SectionAnswerBean> sectionAnswer = q.list();
    session.close();
    return sectionAnswer;

}

但是（下面）的第二个查询总是返回0：

 public List<SectionRequirementBean> getSectionRequirementForAnswer(List<Integer> answerIds)  {
    //SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
    Session session = getMySessionFactory().openSession();

    String hql = "SELECT ARM.requirementId AS requirementId, A.sectionId AS sectionId " +
            "FROM AnswerRequirementMapping ARM, Answer A " +
            "WHERE ARM.answerId IN (:answers) " +
            "AND ARM.answerId = A.id";
    Query q = session.createQuery(hql)
            .setResultTransformer(Transformers.aliasToBean(SectionRequirementBean.class));
    q.setParameterList("answers", answerIds);
    List<SectionRequirementBean> sectionRequirments = q.list();
    return sectionRequirments;
}

似乎要清除数据库，我相信我在会话工厂自动接线到数据访问对象的方式有问题，这可以在下面看到：

@Autowired
private SessionFactory sessionFactory;

public void setSessionFactory(SessionFactory sessionFactory) {
    this.hibernateTemplate = new HibernateTemplate(sessionFactory);
}

public SessionFactory getMySessionFactory() {
    return sessionFactory;
}

public void setMySessionFactory(SessionFactory mySessionFactory) {
    this.sessionFactory = sessionFactory;
}

有人对我在哪里出错有任何提示吗？

在内存中HSQL数据库hibernate查询返回空结果集

0 个答案: